diff --git a/runtime/sam/op/catcher.go b/runtime/sam/op/catcher.go
deleted file mode 100644
index 58f2936beb..0000000000
--- a/runtime/sam/op/catcher.go
+++ /dev/null
@@ -1,29 +0,0 @@
-package op
-
-import (
-	"fmt"
-	"runtime/debug"
-
-	"github.com/superdb/super/sbuf"
-)
-
-// Catcher wraps an Interface with a Pull method that recovers panics
-// and turns them into errors.  It should be wrapped around the output puller
-// of a flowgraph and the top-level puller of any goroutine created inside
-// of a flowgraph.
-type Catcher struct {
-	parent sbuf.Puller
-}
-
-func NewCatcher(parent sbuf.Puller) *Catcher {
-	return &Catcher{parent}
-}
-
-func (c *Catcher) Pull(done bool) (b sbuf.Batch, err error) {
-	defer func() {
-		if r := recover(); r != nil {
-			err = fmt.Errorf("panic: %+v\n%s\n", r, debug.Stack())
-		}
-	}()
-	return c.parent.Pull(done)
-}